What is CVE-2026-61866?

CVE-2026-61866 is a low-severity vulnerability in Imagemagick, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 2.9/10. Published 2026-07-15.

How severe is CVE-2026-61866?

Low severity. CVSS v3 base score is 2.9 out of 10.

Vulnerability in Imagemagick

CVE-2026-61866

ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the JNG encoder when a blob cannot be opened. Attackers can trigger the memory leak by providing malformed JNG files that fail blob operations, causing resource exhaustion.

EPSS: 0.002 (8.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Imagemagick — versions 0, 7.1.2-26

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

References

disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-61866?: CVE-2026-61866 is a low-severity vulnerability in Imagemagick, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 2.9/10. Published 2026-07-15.
How severe is CVE-2026-61866?: Low severity. CVSS v3 base score is 2.9 out of 10.